Structural, optical and magnetic properties of nanophase NiWO4 for potential applications Hitha Harshan, Karathan Parakkandi Priyanka, Aikkara Sreedevi, Anjali Jose and Thomas Varghese Eur. Phys. J. B, 91 11 (2018) 287 Published online: 19 November 2018 DOI: 10.1140/epjb/e2018-90382-3